Light And Sound

Front 1

The lowest frequency in a sound

Back 1

fundamental frequency

Front 2

The higher frequencies in a sound

Back 2

harmonics

Front 3

Sounds that have a frequency lower than 20 hertz

Back 3

infrasound

Front 4

Sounds that have a frequency higher than 20,000 hertz

Back 4

ultrasound

Front 5

The unit of sound frequency

Back 5

hertz

Front 6

The unit of sound intensity

Back 6

decibel

Front 7

how high or low a sound seems

Back 7

pitch

Front 8

The pitch of a sound depends on _____

Back 8

frequency

Front 9

The loudness of a sound depends on _____

Back 9

amplitude

Front 10

loudness of a sound

Back 10

intensity

Front 11

the source of all sound

Back 11

vibration

Front 12

sound cannot travel through ____

Back 12

space

Front 13

what type of material does sound travel the fastest?

Back 13

solids

Front 14

sound travels ___________ in warm air than in cold air

Back 14

faster

Front 15

sound is a ________ wave

Back 15

longitudinal

Front 16

light is a(n) _________ wave

Back 16

electromagnetic

Front 17

what are the 6 kinds of electromagnetic waves (in order from low energy to high energy)?

Back 17

radio, infrared, visible light, ultraviolet, x-rays, gamma rays

Front 18

what is the speed of light in meters/second?

Back 18

300,000,000

Front 19

The bending of light caused by a change in the speed of light

Back 19

refraction

Front 20

which color of light is refracted the least

Back 20

red

Front 21

if light enters a more dense medium, it will refract ________ the normal

Back 21

towards

Front 22

light that vibrates in a single plane

Back 22

polarized light

Front 23

what are the primary colors of light?

Back 23

red, blue, green

Front 24

what are the primary pigments?

Back 24

yellow, cyan, magenta

Front 25

type of lens that is thicker in the middle and thin at the edges

Back 25

convex lens

Front 26

type of lens that is thinner in the middle than at the edges

Back 26

concave lens

Front 27

type of image that cannot be projected onto a screen

Back 27

virtual

Front 28

type of image that can be projected onto a screen

Back 28

real

Front 29

type of reflection from a rough surface where reflected rays are scattered in many directions

Back 29

diffuse reflection

Front 30

type of reflection from a smooth surface where reflected rays are parallel to one another

Back 30

regular reflection

Front 31

a particle of light

Back 31

photon

Front 32

type of electromagnetic wave that has the longest wavelength

Back 32

radio waves

Front 33

what happens to light when it passes through a prism

Back 33

it produces a rainbow

Front 34

Back 34

polarized light

Front 35

Back 35

regular reflection

Front 36

Back 36

concave lens

Front 37

Back 37

regular light

Front 38

Back 38

diffuse reflection

Front 39

Back 39

convex lens

Front 40

what are the names of the 3 tiny bones in the ear?

Back 40

hammer, anvil, stirrup

Front 41

what is the outer part of the ear that we see called?

Back 41

pinna

Front 42

what is the membrane in the ear that vibrates when sound waves hit it

Back 42

eardrum

Front 43

what do we called the snail-shaped structure in the ear that contains a fluid

Back 43

cochlea

Front 44

what is the opening in the eye called?

Back 44

pupil

Front 45

the back of the eyeball

Back 45

retina

Front 46

nerve that connects the eye to the brain

Back 46

optic nerve

Front 47

nerve that connects the ear to the brain

Back 47

auditory nerve

Front 48

transparent coating on the outside of the eye that protects it

Back 48

cornea

Front 49

colored part of the eye that surrounds the pupil

Back 49

iris

Front 50

oval-shaped structure inside the eye that focuses light

Back 50

lens